Improvement in non-conducting coatings for pipes



Ey-lun. UUMFUSHIUNS,

muss HBTBTGHC@ COMING OBPLASTIC T.'MCCABEQ NON-.CONDUCTING COATING FOR PIPS, 89C. V19.178,015.

P-atenta my 30,1876.A

INE@ QMWM f at A L 78, 075"Y Pa'yiuilv'lr` OFFICE.

JOHN MGC'ABE, OF .FITCHBURG, MASSACHUSETTS, .ASSIGNOR TO HIMSELF AND ALFRED O.' HITCHCOCK, 0F PLACE.

iMeRoveM'ENTiN NoN-Qo'NoucTiNe coATmcs Foa PiPEs, ac.

Figure 1 represents a longitudinal central section, and Fig. 2 represents a cross-section,

of a section ot' pipe incased with a coating or covering made according to my-present invention.

To enable Vthose skilled in the art to which l f-my invention belongs to make and use the same, I will now proceed`to describe it more in detail.

In the drawings, tbe part marked A represeuts a section ot' a metallic pipe, in this instance made oi' sheet metal, covered with Aa coating, B, which coating is made by inix ingthe substances hereafter named inabout the proportions, by weight, as follows: Ce-

meut, ten pounds; clay, seven pounds; im'

' lor linez'manure, wo pounds; as ihalfnm, onea poun tarI (coal or o er, one

, pound; hair, one pound.

The mode of mixing the above-named sub lstances is as follows: A suitable tank or receptacle having been provided, the clay is put in, and a. suiiicient quantity of water added to reduce the clay when properly stirred andmixed with Water to produce a v'thin mortar, after which the hair is put in i and thoroughly stirred up with the clay;

`'then the cow (or kine) manure is put in and stirred up with the clay and hair; then the cement is introduced and stirredvp with the other materials already in the tankmor receptacle, after which the asphaltum and tar, having previously been mixed and brought A -toI a gihgg-heat in a suitable vessel,are y poufe intot e receptacle or tank, and the whole thoroughly stirred up together into a mortar of such consistency as to be easily pread upon the piping, or other articles to l' :be covered, with atrowcl. s

y' 1I recommend, in covering steam-pipes, or

Specification fol-mir g part of Letters PatentA No. 178,015. dated May 30, 1876; application filed April'is, 187e.

other articles which are ordinarily kept at a high temperature, that the iirst coating be applied to the pipe or other article while cold, or with the steam or hot watery shut oi, and such coating allowed to dry somewhat, after which other coatings may be applied until the desired thickness of covering or coating is obtained, and which thickness may be varied according to circumstances.

I have found that good results are produced by a coating or covering of from `an inch to an inch and a half inthickness.

1t is always best to permit the covering or coating to dry gradually; consequently, I advise that the steam and hot .water should not be admitted into the pipes while the coating or covering is fresh, and before ithas seh It will be understood that the operator will use proper discretion in applying water during tlleoperation of mixing the substances, so that when ready for use the plastic material, or mixture, will be ofthe desired consistency, as above explained.

In lieu of the kine-manure, wood-moss may be employed; butin which caseI recommend that one pound, by weight, be mixed with the othersubstances in the proportions named.

My invention has been subjected to severe practical tests during the past winter, and has proved highly successful in preventing the escape or radiation ot' .heat from steam and'hotwater pipes; and it has also been tested and found to prevent water freezing in a pipe, when such pipe was placed in the most exposed position, with only a covering of one and one-half inches. V

Having described my improvements in nonconducting covering or coating' for steam and water pipes, and forothe'r similar purposes, what I claim therein as new, and of my in vention, and desire to secure by Letters Patent, is-

A coating or covering/for steam and water pipes, and for other similar purposes, composed of cement., clay, kine-manure,'asphalt um, tar, and hair, taken `in the proportions substantially as above described.

f, `r y? f j L JOHN MCQABE.

Witnesses: y

YJULIA F. HITCHCOCK, mmm F. Lponmn. 

